1 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2 3 // Make sure TSan doesn't deadlock on a file stream lock at program shutdown. 4 // See https://github.com/google/sanitizers/issues/454 5 #ifdef __FreeBSD__ 6 #define _WITH_GETLINE // to declare getline() 7 #endif 8 9 #include <pthread.h> 10 #include <stdio.h> 11 #include <unistd.h> 12 13 void *thread(void *unused) { 14 char *line = NULL; 15 size_t size; 16 int fd[2]; 17 pipe(fd); 18 // Forge a non-standard stream to make sure it's not closed. 19 FILE *stream = fdopen(fd[0], "r"); 20 while (1) { 21 volatile int res = getline(&line, &size, stream); 22 (void)res; 23 } 24 return NULL; 25 } 26 27 int main() { 28 pthread_t t; 29 pthread_attr_t a; 30 pthread_attr_init(&a); 31 pthread_attr_setdetachstate(&a, PTHREAD_CREATE_DETACHED); 32 pthread_create(&t, &a, thread, NULL); 33 pthread_attr_destroy(&a); 34 fprintf(stderr, "DONE\n"); 35 return 0; 36 // ThreadSanitizer used to hang here because of a deadlock on a file stream. 37 } 38 39 // CHECK: DONE 40
